NASA via SCIRUS
NASA via Scirus includes unclassified NASA-sponsored technical reports, contractor reports, dissertations and journal re-prints retrieved from two NASA technial report servers--Langley Technical Reports Server and the National Advisory Committee for Aeronautics Technical Reports Server (NACATRS), the NASA predecessor agency covering 1917-1958. Fulltext is available from 1992 to the present. For a more complete index is the NASA Technical Reports Server. The subject areas include all engineering and scientific disciplines, but are heavily focused on aerospace research and its applications.